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6b47706375
TrustZone protection can be programmed by both memory and TrustZone address space controllers like DMC-500 and TZC-400. These peripherals share a similar programmer's view. Furthermore, it is possible to have multiple instances of each type of peripheral in a system resulting in multiple programmer's views. For example, on the TZC-400 each of the 4 filter units can be enabled or disabled for each region. There is a single set of registers to program the region attributes. On the DMC-500, each filter unit has its own programmer's view resulting in multiple sets of registers to program the region attributes. The layout of the registers is almost the same across all these variations. Hence the existing driver in `tzc400\tzc400.c` is refactored into the new driver in `tzc\tzc400.c`. The previous driver file is still maintained for compatibility and it is now deprecated. Change-Id: Ieabd0528e244582875bc7e65029a00517671216d
210 lines
6.6 KiB
C
210 lines
6.6 KiB
C
/*
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* Copyright (c) 2014-2016, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __TZC400_H__
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#define __TZC400_H__
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#include <tzc_common.h>
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#define BUILD_CONFIG_OFF 0x000
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#define GATE_KEEPER_OFF 0x008
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#define SPECULATION_CTRL_OFF 0x00c
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#define INT_STATUS 0x010
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#define INT_CLEAR 0x014
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#define FAIL_ADDRESS_LOW_OFF 0x020
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#define FAIL_ADDRESS_HIGH_OFF 0x024
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#define FAIL_CONTROL_OFF 0x028
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#define FAIL_ID 0x02c
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/* ID registers not common across different varieties of TZC */
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#define PID5 0xFD4
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#define PID6 0xFD8
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#define PID7 0xFDC
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#define BUILD_CONFIG_NF_SHIFT 24
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#define BUILD_CONFIG_NF_MASK 0x3
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#define BUILD_CONFIG_AW_SHIFT 8
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#define BUILD_CONFIG_AW_MASK 0x3f
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#define BUILD_CONFIG_NR_SHIFT 0
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#define BUILD_CONFIG_NR_MASK 0x1f
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/*
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* Number of gate keepers is implementation defined. But we know the max for
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* this device is 4. Get implementation details from BUILD_CONFIG.
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*/
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#define GATE_KEEPER_OS_SHIFT 16
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#define GATE_KEEPER_OS_MASK 0xf
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#define GATE_KEEPER_OR_SHIFT 0
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#define GATE_KEEPER_OR_MASK 0xf
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#define GATE_KEEPER_FILTER_MASK 0x1
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/* Speculation is enabled by default. */
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#define SPECULATION_CTRL_WRITE_DISABLE (1 << 1)
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#define SPECULATION_CTRL_READ_DISABLE (1 << 0)
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/* Max number of filters allowed is 4. */
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#define INT_STATUS_OVERLAP_SHIFT 16
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#define INT_STATUS_OVERLAP_MASK 0xf
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#define INT_STATUS_OVERRUN_SHIFT 8
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#define INT_STATUS_OVERRUN_MASK 0xf
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#define INT_STATUS_STATUS_SHIFT 0
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#define INT_STATUS_STATUS_MASK 0xf
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#define INT_CLEAR_CLEAR_SHIFT 0
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#define INT_CLEAR_CLEAR_MASK 0xf
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#define FAIL_CONTROL_DIR_SHIFT (1 << 24)
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#define FAIL_CONTROL_DIR_READ 0x0
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#define FAIL_CONTROL_DIR_WRITE 0x1
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#define FAIL_CONTROL_NS_SHIFT (1 << 21)
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#define FAIL_CONTROL_NS_SECURE 0x0
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#define FAIL_CONTROL_NS_NONSECURE 0x1
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#define FAIL_CONTROL_PRIV_SHIFT (1 << 20)
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#define FAIL_CONTROL_PRIV_PRIV 0x0
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#define FAIL_CONTROL_PRIV_UNPRIV 0x1
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/*
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* FAIL_ID_ID_MASK depends on AID_WIDTH which is platform specific.
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* Platform should provide the value on initialisation.
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*/
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#define FAIL_ID_VNET_SHIFT 24
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#define FAIL_ID_VNET_MASK 0xf
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#define FAIL_ID_ID_SHIFT 0
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#define TZC_400_PERIPHERAL_ID 0x460
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/* Filter enable bits in a TZC */
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#define TZC_400_REGION_ATTR_F_EN_MASK 0xf
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#define TZC_400_REGION_ATTR_FILTER_BIT(x) ((1 << x) \
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<< TZC_REGION_ATTR_F_EN_SHIFT)
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#define TZC_400_REGION_ATTR_FILTER_BIT_ALL \
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(TZC_400_REGION_ATTR_F_EN_MASK << \
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TZC_REGION_ATTR_F_EN_SHIFT)
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/*
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* Define some macros for backward compatibility with existing tzc400 clients.
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*/
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#if !ERROR_DEPRECATED
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#define REG_ATTR_FILTER_BIT(x) ((1 << x) \
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<< TZC_REGION_ATTR_F_EN_SHIFT)
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#define REG_ATTR_FILTER_BIT_ALL (TZC_400_REGION_ATTR_F_EN_MASK << \
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TZC_REGION_ATTR_F_EN_SHIFT)
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#endif /* __ERROR_DEPRECATED__ */
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/*
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* All TZC region configuration registers are placed one after another. It
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* depicts size of block of registers for programming each region.
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*/
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#define TZC_400_REGION_SIZE 0x20
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#define TZC_400_ACTION_OFF 0x4
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#ifndef __ASSEMBLY__
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#include <cdefs.h>
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#include <stdint.h>
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/*******************************************************************************
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* Function & variable prototypes
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******************************************************************************/
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void tzc400_init(uintptr_t base);
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void tzc400_configure_region0(tzc_region_attributes_t sec_attr,
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unsigned int ns_device_access);
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void tzc400_configure_region(unsigned int filters,
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int region,
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uintptr_t region_base,
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uintptr_t region_top,
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tzc_region_attributes_t sec_attr,
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unsigned int ns_device_access);
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void tzc400_set_action(tzc_action_t action);
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void tzc400_enable_filters(void);
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void tzc400_disable_filters(void);
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/*
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* Deprecated APIs
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*/
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static inline void tzc_init(uintptr_t base) __deprecated;
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static inline void tzc_configure_region0(
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tzc_region_attributes_t sec_attr,
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unsigned int ns_device_access) __deprecated;
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static inline void tzc_configure_region(
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unsigned int filters,
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int region,
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uintptr_t region_base,
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uintptr_t region_top,
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tzc_region_attributes_t sec_attr,
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unsigned int ns_device_access) __deprecated;
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static inline void tzc_set_action(tzc_action_t action) __deprecated;
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static inline void tzc_enable_filters(void) __deprecated;
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static inline void tzc_disable_filters(void) __deprecated;
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static inline void tzc_init(uintptr_t base)
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{
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tzc400_init(base);
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}
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static inline void tzc_configure_region0(
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tzc_region_attributes_t sec_attr,
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unsigned int ns_device_access)
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{
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tzc400_configure_region0(sec_attr, ns_device_access);
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}
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static inline void tzc_configure_region(
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unsigned int filters,
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int region,
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uintptr_t region_base,
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uintptr_t region_top,
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tzc_region_attributes_t sec_attr,
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unsigned int ns_device_access)
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{
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tzc400_configure_region(filters, region, region_base,
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region_top, sec_attr, ns_device_access);
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}
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static inline void tzc_set_action(tzc_action_t action)
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{
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tzc400_set_action(action);
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}
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static inline void tzc_enable_filters(void)
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{
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tzc400_enable_filters();
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}
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static inline void tzc_disable_filters(void)
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{
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tzc400_disable_filters();
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}
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#endif /* __ASSEMBLY__ */
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#endif /* __TZC400__ */
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